from DIYables_MicroPython_Keypad import Keypad
import time

NUM_ROWS = 4
NUM_COLS = 4

# Constants for GPIO pins
ROW_PINS = [15, 2, 4, 16]  # The ESP32 pin GPIO19, GPIO18, GPIO5, GPIO17 connect to the row pins
COLUMN_PINS = [17, 5, 18, 19]  # The ESP32 pin GPIO16, GPIO4, GPIO0, GPIO2 connect to the column pins

# Keymap corresponds to the layout of the keypad 4x4
KEYMAP = ['1', '2', '3', 'A',
          '4', '5', '6', 'B',
                    '7', '8', '9', 'C',
                              '*', '0', '#', 'D']

                              # Initialize the keypad
                              keypad = Keypad(KEYMAP, ROW_PINS, COLUMN_PINS, NUM_ROWS, NUM_COLS)
                              keypad.set_debounce_time(400) # 400ms, addjust it if it detects twice for single press

                              print("Keypad 4x4 example")

                              # Main loop to check for key presses
                              while True:
                                  key = keypad.get_key()
                                      if key:
                                              print("Key pressed: ", key)